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usmankhan
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Join Date: Feb 2009
Posts: 15

Transformer Inductance

04/20/2009 5:40 AM

hi all,

tell me how to calculate theoratically the inductance of transformer windings
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CraziestOzzy
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Australia - Member - Igor...pull the switch!!!

Join Date: Apr 2009
Location: Australia, sunny North Queensland
Posts: 380
Good Answers: 12
#1

Re: Transformer Inductance

04/20/2009 5:51 AM

LINK

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harry potter
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Join Date: Nov 2008
Location: India
Posts: 333
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#2

Re: Transformer Inductance

04/20/2009 6:37 AM

inductance L or impedence Z ?

Z is useful for calculating short circuit fault levels practically.

Z = 10 * KV * KV * % Z
_______________

KVA

e.g. for 11kv/433v 1000kva with 5% imedence transformer,

value of Z when referred to high voltage side,

Z = 10 * 11* 11 * 5

------------- = 6.05 Ohms.

1000

theoritically , you may neglect value of resistance ( zero losses ) !

then, Z = L

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Anonymous Poster
#3
In reply to #2

Re: Transformer Inductance

08/27/2009 1:31 AM

Dear friend,

You are wrong. you misunderstand the topic.

its about winding inductance not device loading energitic.

this number will larger than what you claculated.

take a think, then correct.

CNpower

China.
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